So I recently met a girl and we started a sexual relationship but she lives very far from me and will only be seeing each other once or twice every month. She is quite young and lacks a lot of experience in sex and in simple things such as kissing. This isn't too much of a problem and we have agreed that we will aim to learn from the relationship both learning more about sexual activities and simply learning to be good bf/gf's.
Thing is she lacks a LOT of experience. I feel this way since my ex was experienced when it came to sex and she could definitely get me going and make it a very very pleasurable experience. I have pretty much learned sex from being on the bottom and my partner been on top riding me, so I am imo better on the bottom and really like that position. The main thing I noticed was when she was on top she didn't really do anything... she just kind of sat on it and didn't have much movement. Also she seems to do a lot of peck kissing rather than what I would call proper making out with lips wrapped around each others lips rather then having lips closed. She also used a bit of teeth while giving a bj which wasn't a pleasant experience. She wasn't a virgin but had only had sex with one person and they were sexually active over a 4 month period so didn't learn too much.
How can I address these sort of things without hurting her feelings or do it in a subtle way? Also if there is a way to bring it up subtly what sort of advice can I give her to improve these things?